package view;

import java.io.File;

import javax.swing.filechooser.FileFilter;

public class ExtensionFileFilter extends FileFilter {

      String description;
      String extensions[];

      public ExtensionFileFilter(String description, String extension) {
        this(description, new String[] { extension });
      }

      public ExtensionFileFilter(String description, String extensions[]) {
        if (description == null) {
          this.description = extensions[0];
        } else {
          this.description = description;
        }
        this.extensions = (String[]) extensions.clone();
        toLower(this.extensions);
      }

      private void toLower(String array[]) {
        for (int i = 0, n = array.length; i < n; i++) {
          array[i] = array[i].toLowerCase();
        }
      }

      public String getDescription() {
        return description;
      }

      @Override
      public boolean accept(File file) {
        if (file.isDirectory()) {
          return true;
        } else {
          String path = file.getAbsolutePath().toLowerCase();
          for (int i = 0, n = extensions.length; i < n; i++) {
            String extension = extensions[i];
            if ((path.endsWith(extension) && (path.charAt(path.length() - extension.length() - 1)) == '.')) {
              return true;
            }
          }
        }
        return false;
      }

    }
